testing: Change sql scenarios to swanctl

testing/tests/sql/rw-psk-ipv6/test.conf

@@ -9,7 +9,7 @@ VIRTHOSTS="alice moon carol winnetou dave"
 
 # Corresponding block diagram
 #
-DIAGRAM="a-m-c-w-d-ip6.png"
+DIAGRAM="a-m-c-w-d.png"
 
 # Guest instances on which tcpdump is to be started
 #
@@ -23,3 +23,7 @@ IPSECHOSTS="moon carol dave"
 # Guest instances on which databases are used
 #
 DBHOSTS="$IPSECHOSTS"
+
+# charon controlled by swanctl
+#
+SWANCTL=1